Re: [PATCH] Input: synaptics - limit T440p InterTouch quirk to LEN0036

[Dmitry Torokhov]

On Sat, Sep 26, 2026 at 08:58:10PM -0400, R. Larocque wrote:
> From: "Raphaël Larocque" <rlarocque@xxxxxxxxxxx>
> 
> The ThinkPad L440 also uses board id 2722, but does not have the SMBus
> initialization problem seen on the T440p. On the L440, the SMBus
> companion becomes available shortly after psmouse probes, allowing the
> touchpad to use SMBus/RMI4 normally.
> 
> The T440p's quirk is currently applied to all Synaptics touchpads with
> board id 2722, unnecessarily disabling SMBus InterTouch on the L440,
> as reported by Daniel Salmun.
> 
> Restrict the quirk to PNP ID LEN0036, which identifies the T440p, so
> that other devices sharing board id 2722 retain their normal
> SMBus/RMI4 operation.
> 
> Reported-by: Daniel Salmun <salmundani@xxxxxxxxx>
> Link: https://lore.kernel.org/all/20260925230039.236786-1-salmundani@xxxxxxxxx/
> Fixes: 26eb3d92c7a4 ("Input: synaptics - disable InterTouch on ThinkPad T440p (board id 2722)")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Raphaël Larocque <rlarocque@xxxxxxxxxxx>

Swapped the condition (since integer check is cheaper) and applied,
thank you.

-- 
Dmitry